I have the Ultrabreeze full suit. Do not have the PM, but have owned an other heavy cotton suit. Cotton coveralls or
jackets are very hot. Though the Ultrabreeze "feels" heavy - it is as cool as can be in the heat - It is made from 3 layers of mesh, not solid fabric. Your movements create a slight breeze on a still day. Yet the bees can not sting. The zippers did stick a bit, but a little wax or lubricant helped cure that. On the full suit having the zips on the legs is great - can get in and out with my boots on. If you want to be cool, use the full suit so you can have bare legs (with shorts on, or not depending on how remote the yards are :-).) If you just have the jacket you'll need long pants to get the same protection. Honestly, nothing compares, worth the money.